问题
I am trying to send an audio blob produced by WebAudio API and Recorder.js to my Laravel Controller using jQuery's $.post method. Here is what I am trying.
$('#save_oralessay_question_btn').click(function(e){
var question_content = $('#question_text_area').val();
var test_id_fr = parseInt($('#test_id_fr').val());
var question_type = parseInt($('#question_type').val());
var rubric_id_fr = $('#rubric_id_fr').val();
var reader = new FileReader();
reader.onload = function(event){
var form_data = new FormData();
form_data.append('audio_data', event.target.result);
var result = $.post('../questions',
{
question_content:question_content,
question_type:question_type,
test_id_fr:test_id_fr,
rubric_id_fr:rubric_id_fr,
audio_data:form_data,
processData: false,
contentType: false
},function(data){
var html = "<div class='row col-md-4'><div class='col-md-offset-6'><i class='fa fa-check fa-5x' aria-hidden='true'></i></div></div>";
swal({ title: "Success!", text: data, type: "success", timer:2000 },function(){
//location.reload();
});
})
.done(function(data){
}).fail(function(xhr, status, error){
sweetAlert("Error!", error, "error");
});
};
reader.readAsDataURL(audio_files[0]); //this contains the blob recorded
});
That gives
Uncaught TypeError: Illegal invocation
EDIT
This is what audio_files
have.
recorder && recorder.exportWAV(function(blob) {
audio_files.push(blob);
var url = URL.createObjectURL(blob);
var li = document.createElement('li');
var au = document.createElement('audio');
var hf = document.createElement('a');
//console.log(typeof(url));
au.controls = true;
au.src = url;
au.autoplay=true;
hf.href = url;
hf.download = new Date().toISOString() + '.wav';
hf.download = url +'.wav';
li.appendChild(au);
li.appendChild(hf);
recordingslist.appendChild(li);
});
EDIT 2
I've tried another way of sending blob using XmlHttpRequest
.
var xhr=new XMLHttpRequest();
xhr.onload=function(e) {
if(this.readyState === 4) {
console.log("Server returned: ",e.target.responseText);
}
};
var fd=new FormData();
fd.append("audio_data",audio_files[0]);
fd.append('question_content', question_content);
fd.append('question_type', question_type);
xhr.open("POST","../questions",true);
xhr.send(fd);
Controller
In the controller when I can fetch data like $request["audio_data"]
. But this gives a path to a file which is as C:\wamp\tmp\phpxxx
Please share how to use this data. I have seen this path but there is no file like phpxxx
in the respective directory.
回答1:
You send a data URL
instead of a Blob
; FileReader
is not necessary if expected result is to POST
Blob
or File
object. You can send the File
object itself, as File
inherits from Blob
$('#save_oralessay_question_btn').click(function(e) {
var question_content = $('#question_text_area').val();
var test_id_fr = parseInt($('#test_id_fr').val());
var question_type = parseInt($('#question_type').val());
var rubric_id_fr = $('#rubric_id_fr').val();
var result = $.post('../questions', {
question_content: question_content,
question_type: question_type,
test_id_fr: test_id_fr,
rubric_id_fr: rubric_id_fr,
audio_data: audio_files[0],
processData: false,
contentType: false
}, function(data) {
var html = "<div class='row col-md-4'><div class='col-md-offset-6'><i class='fa fa-check fa-5x' aria-hidden='true'></i></div></div>";
swal({
title: "Success!",
text: data,
type: "success",
timer: 2000
}, function() {
//location.reload();
});
})
.done(function(data) {
}).fail(function(xhr, status, error) {
sweetAlert("Error!", error, "error");
});
});
来源:https://stackoverflow.com/questions/38783302/sending-audio-blob-to-server